JP5146551B2 - Information terminal equipment - Google Patents

Description

  The present invention relates to an information terminal device, and is suitable for application to, for example, a mobile phone equipped with a CCD camera.

  2. Description of the Related Art Conventionally, there has been proposed a mobile phone that images a blood vessel inside a living body with a CCD camera and executes an authentication process using the captured blood vessel (see, for example, Non-Patent Document 1).

  In practice, when a transmission command is given from the operation unit, this mobile phone notifies the user operating the operation unit at this time via the display unit that a blood vessel should be imaged, and as a response to the notification. When a blood vessel imaging command is given from the operation unit, a blood vessel is imaged by the CCD camera.

  Thereafter, the mobile phone performs a predetermined authentication process using the blood vessel, and transmits personal information only when it is determined that the user operating the operation unit at this time is a regular user based on the authentication result. It is made to allow.

Japanese Patent Application No. 2004-135609

  However, in the mobile phone having such a configuration, after performing an operation corresponding to the transmission command, not only an operation corresponding to the blood vessel imaging command is required, but also an operation for transmitting personal information after the authentication processing is required. On the other hand, a complicated operation is forced and the convenience is poor.

  The present invention has been made in consideration of the above points, and intends to propose an information terminal device capable of improving convenience.

In order to solve this problem, the present invention movably holds a polarizing plate that diverts light reflected from the surface of the living body out of the light including the wavelength having absorption characteristics of the subject inside the living body from the optical path of the imaging device. Holding means, a first mode for imaging a subject existing in the living body in response to the movement of the polarizing plate on the optical path of the imaging device, and the removal of the polarizing plate from the optical path of the imaging device Switching means for switching between a second mode for imaging a subject other than the subject in the living body and a third mode for making the non-imaging state when the polarizing plate is moved, and switching to the first mode. In this case, there is provided an irradiating means for irradiating light and a collating means for collating information to be compared with a subject inside the living body imaged by the imaging element when the mode is switched to the first mode.

According to the present invention, since the polarizing plate held by the holding means is collated with the information to be compared with the subject inside the living body imaged by the imaging device only when the polarizing plate is arranged on the optical path of the imaging device, the user Can be collated just by moving the holding means, and when the polarizing plate is moved, it can be in a non-imaging state and power consumption can be reduced. Thus, convenience can be improved. Furthermore, the light reflected from the surface of the finger without passing through the inside of the living body can be deflected from the image sensor by the polarizing plate, and the collation accuracy can be improved.

It is a basic diagram which shows the external appearance structure of the mobile telephone by this Embodiment. It is an approximate line figure showing cellular phone (1) in a closed state. It is an approximate line figure showing cellular phone (2) of a closed state. It is a basic diagram which shows the structure of an imaging part. It is a basic diagram which shows the structure (1) of a lens moving mechanism. It is a basic diagram which shows the structure (2) of a lens moving mechanism. It is a basic diagram which shows the relationship (1) of the movement state of a lens moving mechanism, and an imaging state. It is a basic diagram which shows the relationship (2) of the movement state of a lens moving mechanism, and an imaging state. It is a block diagram which shows the circuit structure inside the mobile telephone by this Embodiment. It is a block diagram which shows the structure of an imaging control part. It is a basic diagram with which it uses for description of the read-out timing of CCD. It is a basic diagram with which it uses for description of the imaging sensitivity adjustment by an electronic shutter. It is a flowchart which shows a mode switching process sequence. It is a basic diagram which shows the structure (1) of the lens moving mechanism by other embodiment. It is a basic diagram which shows the structure (2) of the lens moving mechanism by other embodiment.

  Embodiments to which the present invention is applied will be described in detail below with reference to the drawings.

(1) Configuration of mobile phone (1-1) External configuration of mobile phone In FIGS. 1 and 2, reference numeral 1 denotes an external configuration of a mobile phone according to the present embodiment, and a first casing (hereinafter referred to as a substantially rectangular parallelepiped shape). , This is referred to as a first housing) 2 and a second housing (hereinafter referred to as a second housing) 3 is substantially horizontal via a rotating shaft portion 4 provided at one end of the second housing 3. It is configured by being rotatably connected in the direction.

  A display unit 11 is provided at the center of the surface of the first casing 2, and a rotary and pressable operation unit (hereinafter referred to as “rotation”) called a speaker 12 above the display unit 11 and a jog dial below the display unit 11. (Referred to as a pressing operation unit) 13 is provided.

  On the other hand, an operation unit 14 including various operation keys such as a power key, a call key, and a character input key is provided at the center of the surface of the second casing 3, and a microphone 15 is provided below the operation unit 14. It has been.

  The cellular phone 1 operates the call or operation unit 14 while holding the second housing 3 with one hand in the open state in which the back surface of the first housing 2 and the front surface of the second housing 3 are separated (FIG. 1). On the other hand, in the closed state in which the back surface of the first housing 2 and the front surface of the second housing 3 are overlapped (FIG. 2), the operation unit 14 is protected and an erroneous operation is prevented, and the overall size of the mobile phone 1 is reduced and carried. It is made to improve the sex.

  In addition to this configuration, as shown in FIG. 3, in the mobile phone 1, an imaging unit 20 is provided on the back surface 3 </ b> A of the second housing 3, and the imaging unit 20 includes a deoxygenated hemoglobin (venous vein) in a blood vessel. Blood) or oxygenated hemoglobin (arterial blood) in the finger arranged so as to be applied to a predetermined position of the imaging unit 20 by utilizing the specific absorption of near-infrared light (near-infrared light). The other blood vessel can be imaged.

(2) Configuration of Imaging Unit In practice, as shown in FIGS. 3 and 4, in this imaging unit 20, a CCD camera 21 is housed in the second housing 3, and is associated with the CCD camera 21. An imaging opening 22 is provided on the surface (second housing 3) of the imaging unit 20, and a colorless and transparent lid 23 made of a predetermined material is provided in the imaging opening 22.

  As a result, the imaging unit 20 can prevent foreign matter from flowing into the second housing 3 from the imaging opening 22 and also prevent the CCD camera 21 from being soiled due to the finger FG being applied. Has been made.

  Further, a near infrared light source 24 (24a and 24b) is provided on the surface of the imaging unit 20, and in the near infrared light source 24, the finger of the finger FG applied on the imaging opening 22 is provided. The irradiation direction is selected so that near infrared light is irradiated to the ventral side.

  Therefore, the imaging unit 20 is irradiated from the near-infrared light source 24 onto the finger FG applied on the imaging opening 22, and is absorbed by hemoglobin present in the blood vessel tissue inside the finger FG and the blood vessel tissue. Near-infrared light obtained by scattering in other tissues can be incident on the CCD camera 21 sequentially through the imaging opening 22 and the lid 23.

  This CCD camera 21 is a macro lens (hereinafter referred to as near-infrared light) that transmits only light corresponding to the wavelength in the near-infrared band (approximately 700 [nm] to 900 [nm]) in the optical path below the imaging aperture 22. (Referred to as a light transmission lens) 25 and a CCD 26 are sequentially arranged so that near-infrared light out of various bands of light incident from the imaging opening 22 is guided to the CCD 26.

  The CCD camera 21 has a direction perpendicular to the irradiation direction of the near-infrared light source 24 between the imaging opening 22 and the near-infrared light transmitting lens 25 (hereinafter referred to as an irradiation orthogonal direction). A polarizing plate 27 having a polarization axis is provided.

  Thereby, in the CCD camera 21, near infrared light (hereinafter referred to as finger surface) reflected from the surface of the finger FG without passing through the inside of the finger FG from the direction perpendicular to the irradiation orthogonal direction. The deflecting plate 27 can deflect the reflected near infrared light) from the optical path.

  Therefore, the CCD camera 21 selectively selects near-infrared light (hereinafter referred to as blood vessel projection light) obtained from the inside of the finger FG among the near-infrared light incident from the imaging opening 22 to the CCD 26. The light can be guided.

  The CCD 26 has a plurality of photoelectric conversion elements arranged in a lattice shape, and photoelectrically converts blood vessel projection light in these photoelectric conversion elements. The CCD 26 is configured to output the electric charge charged to each photoelectric conversion element as a result of the photoelectric conversion as a blood vessel image signal S10a according to a predetermined control signal.

  In this way, the imaging unit 20 can image a blood vessel inside the finger FG as an imaging target.

  In addition to this configuration, the imaging unit 20 uses a lens moving mechanism that moves the near-infrared light transmitting lens 25 and the polarizing plate 27 in the CCD camera 21 so that not only blood vessels inside the finger FG but also the background and the like are normal. A subject can also be imaged.

(3) Configuration of Lens Moving Mechanism As shown in FIG. 6 in which AA ′ in FIGS. 5 and 5 is taken as a cross-section, the lens moving mechanism 30 is practically arranged between the imaging aperture 22 and the solid-state imaging device 14c ( 4), a slide plate 31 which is parallel to the back surface 3A of the second housing 3 and is slidable in the longitudinal direction LC (LCa and LCb) of the second housing 3, and one end of the slide plate 31 The grip portion 32 is integrally formed and protrudes from the side surface 3B of the second casing 3.

  The slide plate 31 includes a near-infrared light transmitting lens 25 and a polarizing plate 27 in the longitudinal direction of the second casing 3, and a lens (hereinafter referred to as an RGB transmitting lens) 33 that transmits only a wavelength corresponding to RGB. Each is to be held.

  Therefore, the lens moving mechanism 30 manually slides the slide plate 31 via the gripping portion 32, so that it is between the optical paths from the imaging opening 22 to the solid-state imaging device 14c (hereinafter referred to as an optical path intermediate position). The near-infrared light transmitting lens 25 and the polarizing plate 27 or the RGB transmitting lens 33 provided on the slide plate 31 can be arranged.

  As a result, in the imaging unit 20, when the near-infrared light transmitting lens 25 and the polarizing plate 27 are arranged in the middle of the optical path, the imaging unit 20 is obtained via the finger FG applied on the imaging opening 22. When the blood vessel projection light is output as the blood vessel image signal S10a (FIG. 4) via the CCD 26, and the RGB transmission lens 33 is disposed in the middle of the optical path, subject reflected light incident from the imaging opening 22 is reflected. The subject image signal S10b (FIG. 4) is output via the CCD 26.

  In this manner, in the imaging unit 20, the lens moving mechanism 30 can image a blood vessel or a normal subject inside the finger FG as an imaging target.

  In addition to this configuration, as shown in FIG. 5, the lens moving mechanism 30 includes a switch unit 34 including a near-infrared light imaging switch 34A and a visible light imaging switch 34B on the side surface 3B of the second housing 3. Is provided.

  As shown in FIGS. 7 and 8, the near-infrared light imaging switch 34A is in a state where the near-infrared light transmitting lens 25 and the polarizing plate 27 are disposed in the middle of the optical path (hereinafter referred to as a blood vessel imaging state). At a position corresponding to the grasping portion 32 at the time of calling) and is turned on by the grasping portion 32 in the blood vessel imaging state. At this time, the near-infrared light imaging switch 34A sends a signal indicating that the lens moving mechanism 30 is in a blood vessel imaging state (hereinafter referred to as a blood vessel imaging state notification signal) to an internal circuit (not shown).

  On the other hand, the visible light imaging switch 34B has a position corresponding to the grip portion 32 when the RGB transmission lens 33 is disposed in the middle of the optical path (hereinafter referred to as a subject imaging state). The grip unit 32 is turned on when the subject is being imaged. At this time, the visible light imaging switch 34B sends a signal indicating that the lens moving mechanism 30 is in a subject imaging state (hereinafter referred to as a subject imaging state notification signal) to an internal circuit (not shown).

  On the other hand, the switch unit 34 is in a state where both the near-infrared light transmitting lens 25, the polarizing plate 27, and the RGB transmitting lens 33 are not disposed in the middle of the optical path (hereinafter referred to as a non-imaging state). The notification signal is not sent to the internal circuit (not shown) to notify the internal circuit (not shown) that the lens moving mechanism 30 is in the non-imaging state.

  In this way, the lens moving mechanism 30 can notify the internal circuit of the imaging state (blood vessel imaging state, subject imaging state or non-imaging state) according to the position of the slide plate 31.

(4) Circuit configuration of the mobile phone On the other hand, in the mobile phone 1, as shown in FIG. 9, the control unit 40 that controls the entire mobile phone 1 has a display unit 11, as shown in FIG. The rotary pressing operation unit 13, the operation unit 14, the storage unit 41, the transmission / reception unit 42, the state detection unit 43, and the imaging control unit 44 are connected to each other.

  The storage unit 41 stores various programs, personal data, and various data such as a regular user's blood vessel formation pattern (hereinafter referred to as a normal blood vessel formation pattern) in the mobile phone 1 in a predetermined file format. ing.

  The control unit 40 includes a CPU, a storage memory, a work memory, and a clock transmitter, and appropriately reads a file corresponding to the operation command COM input from the rotary pressing operation unit 13 or the operation unit 14 from the storage unit 41 to work memory. And execute various processes according to the expanded file. At this time, the control unit 40 displays the processing content on the display unit 11 as necessary.

  The transmission / reception unit 42 is connected to the speaker 12, the microphone 15, and the antenna ANT provided in the mobile phone 1, and modulates and amplifies various signals supplied from the microphone 15 or the control unit 40. As a result, The obtained uplink wave signal is transmitted to a base station (not shown) via the antenna ANT.

  On the other hand, the transmission / reception unit 42 receives and amplifies a downlink wave signal transmitted from a base station (not shown) via the antenna ANT, and demodulates the resulting signal. To be sent to.

  The state detection unit 43 determines the state (blood vessel imaging) of the lens movement mechanism 30 based on the blood vessel imaging state notification signal S1a or the subject imaging state notification signal S1b supplied from the switch unit 34 (FIGS. 7 and 8) of the lens movement mechanism 30. State, subject imaging state or non-imaging state), and the detection result is transmitted to the control unit 40 as data (hereinafter referred to as state detection data) D1.

  The imaging control unit 44 controls the non-imaging mode, the subject imaging mode (hereinafter referred to as the subject imaging mode), or the blood vessel imaging mode (hereinafter referred to as the blood vessel imaging mode) according to the control of the control unit 40. Call).

  In practice, as shown in FIG. 10, the imaging control unit 44 includes a light source control unit 44a that controls the near-infrared light source 24, a charge adjustment unit 44b that controls the CCD 26, and an A / D (Analog) connected to the CCD 26. / Digital) conversion unit 44c, and in the non-imaging mode, the power supply voltage from the battery is cut off by the control unit 40, and as a result, it is in a non-operating state.

  On the other hand, the power supply voltage is supplied to the imaging control unit 44 from the battery built in the mobile phone 1 only to the charge adjustment unit 44b and the A / D conversion unit 44c in the subject imaging mode, and the charge adjustment unit 44b and The subject imaging mode is executed by the A / D conversion unit 44c.

  In this case, as shown in FIG. 11A, the charge adjusting unit 44b generates a pulse signal having a predetermined duty ratio as a unit period PT from the falling time point to the next falling time point, and reads this as a charge read signal. The signal S2 is sent to the CCD 26. As a result, in the CCD 26, the charge charged in each photoelectric conversion element in the unit period PT (FIG. 11A) is periodically read out starting from the falling point, and the read charge is The subject image signal S10b (FIG. 4) is output to the A / D converter 44c.

  The A / D conversion unit 44c performs A / D conversion processing on the subject image signal S10b, and sends the subject image data D10b obtained as a result to the control unit 40 (FIG. 9).

  On the other hand, in the imaging control unit 44, in the blood vessel imaging mode, the power supply voltage is supplied from the battery to the light source control unit 44a, the charge adjustment unit 44b, and the A / D conversion unit 44c, and the light source control unit 44a, the charge adjustment unit 44b, and the A / D. The blood vessel imaging mode is executed by the D conversion unit 44c.

  In this case, the light source control unit 44a boosts the power supply voltage so as to have a preset voltage value. This voltage value is used to reduce the influence of near-infrared light caused by light in the atmosphere that reaches the living body during imaging (hereinafter referred to as normal light). Is selected as a value irradiated from the near-infrared light source 24 (24a and 24b).

  The light source controller 44a drives the near-infrared light source 24 by applying the boosted power supply voltage to the near-infrared light source 24 as the light source drive signal S1.

  As a result, the near-infrared light source 24 (24a and 24b) is turned on, and the finger FG (FIG. 4) applied on the imaging opening 22 is irradiated with near-infrared light having intensity greater than that of normal light. Will be.

  In this way, the light source control unit 44a can control the near-infrared light source 24 so that near-infrared light having intensity greater than that of normal light is emitted.

  In the charge adjusting unit 44b, the intensity of the near-infrared light emitted from the near-infrared light source 24 is higher than that of the normal light, as shown in FIG. 12A, simply by sending the charge readout signal S2 to the CCD 26. Due to the large size, in the CCD 26, a situation occurs in which the charge charged to each photoelectric conversion element is saturated during the unit period PT (FIG. 11A).

  Therefore, the charge amount adjustment unit 34b executes an exposure time control process called an electronic shutter so as to limit the charge amount per unit period PT (FIG. 11A) charged in the CCD 26 (each photoelectric conversion element). Has been made.

  That is, as shown in FIG. 11B, the charge amount adjustment unit 34b is set to a preset intermediate time point of the unit period PT, for example, as a reset time point of the charge charged in the CCD 26 (each photoelectric conversion element). In addition, a charge reset signal S3 is generated based on the charge read signal S2.

  At this reset time, the saturation period of the charge charged in each photoelectric conversion element changes according to the voltage value of the light source drive signal S1 applied to the near-infrared light source 24 (that is, the intensity of near-infrared light). It is selected at the time corresponding to the voltage value in the unit period PT.

  The charge amount adjusting unit 34b sends the charge reset signal S3 to the CCD 26 together with the charge read signal S2. As a result, in the CCD 26, as shown in FIG. 11C, the charge charged in the unit period PT is limited to only the period EST from the reset time of the charge reset signal S3 to the falling time of the charge read signal S2. The Rukoto.

  As shown in FIG. 12B, in the CCD 26, even when normal light is incident together with the blood vessel projection light, the charge charged to each photoelectric conversion element as a photoelectric conversion result for the blood vessel projection light and the normal light. Since the amount is relatively decreased, the imaging sensitivity with respect to the blood vessel projection light in the CCD 26 is not substantially affected by the normal light.

  In this way, the charge amount adjusting unit 34b restricts the amount of charge charged to the CCD 26 (each photoelectric conversion element), thereby allowing the CCD 26 for the blood vessel projection light to be in a state where there is no substantial influence by the normal light. The imaging sensitivity can be adjusted.

  The A / D conversion unit 44c performs A / D conversion processing on the blood vessel image signal S10a output from the CCD 26, and sends the blood vessel image data D10a obtained as a result to the control unit 40 (FIG. 9).

  In this way, the imaging control unit 44 can execute the non-imaging mode, the subject imaging mode, or the blood vessel imaging mode.

(5) Mode Switching Function Here, the cellular phone 1 is equipped with a mode switching function for executing a mode corresponding to the state of the lens moving mechanism 30 (FIGS. 7 and 8).

  This mode switching function includes a mode for executing processing corresponding to the blood vessel imaging state (FIGS. 7A and 8A) (hereinafter referred to as blood vessel imaging corresponding processing mode) and subject imaging. A mode (hereinafter, referred to as a subject imaging corresponding processing mode) in which processing corresponding to the state (FIG. 7B and FIG. 8B) is executed, and a non-imaging state (FIG. 7C) 8 (C)), a mode for executing a corresponding process (hereinafter referred to as a non-imaging compatible processing mode) is included, and the control unit 40 executes each of these processing modes. This mode switching function is realized.

  In this cellular phone 1, when transmitting information to the external device to the cellular phone 1, the user who operates the information transmission himself / herself moves the lens moving mechanism 30 in the blood vessel imaging state (FIG. 7A and FIG. 7). FIG. 8 (A)).

  Hereinafter, the non-imaging compatible processing mode, the subject imaging compatible processing mode, and the blood vessel imaging compatible processing mode will be described in detail.

(5-1) Non-Imaging Correspondence Processing Mode The control unit 40 performs non-imaging correspondence processing when the state detection data D1 having the content that the lens moving mechanism 30 is in the non-imaging state is supplied from the state detection unit 43. As a mode, a process corresponding to each function of the mobile phone 1 (hereinafter referred to as a function corresponding process) is executed or is in an executable state.

  At this time, the control unit 40 blocks the flow of the power supply voltage from the battery to the imaging control unit 44 and sets the imaging control unit 44 to the non-imaging mode, and stops the imaging control process in the imaging control unit 44. It is made to do.

  In this way, in the non-imaging support processing mode, the control unit 40 stops only the image capture control process in the image capture control unit 44 among the function support processes, so that the power consumption in the image capture control unit 44 is lost. The processing load of the entire mobile phone 1 can be reduced.

  When the control unit 40 receives the state detection data D1 representing the blood vessel imaging state (FIGS. 7A and 8A) in the non-imaging compatible processing mode, the control unit 40 transitions to the blood vessel imaging compatible processing mode. On the other hand, when the state detection data D1 representing the subject imaging state (FIG. 7B and FIG. 8B) is received, the processing shifts to the subject imaging corresponding processing mode.

  Therefore, in the control unit 40, the slide of the lens moving mechanism 30 can be performed without forcing the user to perform a complicated operation such as mode switching via the operation unit 13 or 14 or to store the operation content. It is possible to automatically switch to the blood vessel imaging corresponding processing mode or the subject imaging corresponding processing mode only by a simple operation such as sliding the plate 31.

(5-2) Subject Imaging Correspondence Processing Mode On the other hand, when the control unit 40 transitions to the subject imaging correspondence processing mode, the control unit 40 restricts some of the function correspondence processing (hereinafter, referred to as target processing).

  In the case of this embodiment, the control unit 40 accepts only the state detection data D1, the subject imaging command, and a call command as a response to the incoming call notification received by the transmission / reception unit 34, and stops the display process so as to stop the display process. To control.

  Therefore, in this cellular phone 1, other than the operation command generation processing in the operation units 13 and 14 that generate the operation command COM corresponding to a certain operation, the reception processing in the transmission / reception unit 34, and the state detection processing in the state detection unit 35 This process is restricted as a target process.

  In this state, the control unit 40 supplies the power supply voltage of the battery to the charge amount adjustment unit 34b and the A / D conversion unit 44c, and controls the imaging control unit 44 to enter the subject imaging mode.

  The control unit 40 stores the subject image data D10b supplied from the imaging control unit 44 in the storage unit 41 in a predetermined compression format in accordance with the subject imaging command from the operation unit 13 or 14.

  Further, the control unit 40 receives the state detection data D1 representing the blood vessel imaging state (FIGS. 7A and 8A) and the non-imaging state (FIG. 7C) in this subject imaging corresponding processing mode. When the state detection data D1 representing FIG. 8C) is received, the restriction of the target process is released, and the imaging control unit 44 is controlled to be in the corresponding imaging mode, so that the blood vessel imaging is performed. Transition to the corresponding processing mode or the non-imaging compatible processing mode.

  Accordingly, the control unit 40 can perform only simple operations such as sliding the slide plate 31 of the lens moving mechanism 30 without forcing the user to memorize complicated operations and operation contents even in the subject imaging compatible processing mode. Thus, it is possible to automatically switch to the blood vessel imaging compatible processing mode or the non-imaging compatible processing mode.

  In addition, in this subject imaging corresponding processing mode, when the control unit 40 receives a call command as an incoming call response from the operation unit 13 or 14, the control unit 40 releases the restriction on the target processing and performs non-imaging on the imaging control unit 44. After controlling to be in the mode, a transition is made to the non-imaging compatible processing mode.

  In this way, the control unit 40 automatically controls the imaging control unit 44 to be in the subject imaging mode in conjunction with the subject imaging state of the lens moving mechanism 30 (FIGS. 7B and 8B). By doing so, it is possible to reduce the physical operation burden on the user until the subject is captured.

  In this case, the control unit 40 stops unnecessary target processing at the time of subject imaging among the function corresponding processing of the cellular phone 1, thereby minimizing the processing load of the entire mobile phone 1 at the time of subject imaging. It is made so that it can be suppressed.

(5-3) Blood vessel imaging compatible processing mode On the other hand, when the control unit 40 transitions to the blood vessel imaging compatible processing mode, the control unit 40 notifies the display unit 11 to input communication related information such as a transmission partner and transmission target data. When the communication related information is input via the operation unit 13 or 14, the target process is limited in the function corresponding process as in the subject imaging corresponding process mode.

  Incidentally, the target process restricted at this time includes the operation command generation process in the operation units 13 and 14 for generating the subject imaging command as the target process, and the subject process corresponding to the subject imaging in which the process is excluded from the target process is included. It is different from the processing mode.

  In this state, the control unit 40 supplies the power supply voltage of the battery to the light source control unit 44a, the charge amount adjustment unit 34b, and the A / D conversion unit 44c, and controls the imaging control unit 44 to enter the blood vessel imaging mode.

  Then, the control unit 40 performs binarization processing on the blood vessel image data D10a supplied from the imaging control unit 44, and uses, for example, a combination of blood vessels in the binary blood vessel image obtained as a result as a blood vessel formation pattern. After extraction, this angiogenesis pattern is collated with a normal angiogenesis pattern registered in advance in the storage unit 32.

  Here, the control unit 40 retries a specified number of times using the blood vessel image data D <b> 10 a provided from the imaging control unit 44 when the matching rate is less than a predetermined threshold as a result of this comparison. If the matching result is less than the threshold even after retrying the specified number of times, the target processing restriction is canceled and the imaging control unit 44 is controlled to be in the non-imaging mode. Transition to the non-imaging compatible processing mode. At this time, the control unit 40 notifies that the blood vessel authentication has failed via the display unit 11.

  On the other hand, the control unit 40 determines that the blood vessel formation pattern matches the normal blood vessel formation pattern when the matching result is equal to or higher than the threshold value. In this case, the image pickup control unit 44 is set to the non-image pickup mode. Then, the transmission / reception unit 42 is controlled to execute communication processing according to communication-related information input at the time of transition to the blood vessel imaging support processing mode.

  Further, in this blood vessel imaging corresponding processing mode, the control unit 40 receives the state detection data D1 representing the subject imaging state (FIG. 7B and FIG. 8B) and the non-imaging state (FIG. 7C). When the state detection data D1 representing FIG. 8C) is received, the restriction of the target process is released, and the imaging control unit 44 is controlled to be in the corresponding imaging mode, and the subject imaging is performed. Transition to the corresponding processing mode or the non-imaging compatible processing mode.

  Accordingly, the control unit 40 can perform only simple operations such as sliding the slide plate 31 of the lens moving mechanism 30 without forcing the user to memorize complicated operations and operation contents even in the blood vessel imaging processing mode. Thus, it is possible to automatically switch to the subject imaging compatible processing mode or the non-imaging compatible processing mode.

  In this blood vessel imaging support processing mode, the control unit 40 releases the restriction on the target processing in the same manner as in the subject imaging support processing mode when receiving a call command as an incoming call response from the operation unit 13 or 14. In addition, after the imaging control unit 44 is controlled to be in the non-imaging mode, the mode is shifted to the non-imaging compatible processing mode.

  In this way, the control unit 40 inputs communication-related information in conjunction with the blood vessel imaging state (FIGS. 7A and 8A) of the lens moving mechanism 30, and after this input, the imaging is automatically performed. By controlling the control unit 44 to be in the blood vessel imaging mode and executing the authentication process, it is possible to significantly reduce the physical operation burden on the user from the time of entering the blood vessel imaging state to the time of communication. Regardless of the intention, the information in the mobile phone 1 can be protected from a third party.

  In this case, the control unit 40 not only prevents direct unauthorized use by a third party by executing an authentication process using the blood vessel formation pattern in the living body, but also compared with a fingerprint or the like on the living body surface. As a result, it is possible to more securely prevent impersonation of a registrant by a third party, so that the protection of the information in the mobile phone 1 from the third party can be strengthened.

  Further, in this case, the control unit 40 appropriately stops unnecessary target processing at the time of blood vessel imaging, authentication, and communication among the function corresponding processing of the mobile phone 1, so that these blood vessel imaging, authentication, and communication are performed. Depending on the situation, the processing load of the entire mobile phone 1 can be minimized.

(5-4) Mode Switching Processing Procedure The mode switching processing of the non-imaging compatible processing mode, the subject imaging compatible processing mode, and the blood vessel imaging compatible processing mode by the control unit 40 is executed according to the mode switching processing procedure shown in FIG. .

  That is, when the main power supply of the cellular phone 1 is turned on, the control unit 40 starts the mode switching processing procedure RT from step SP0 and proceeds to the subsequent step SP1 to perform imaging by the imaging control unit 44 in the function corresponding processing. After transitioning to the non-imaging compatible processing mode so that processing other than processing is executed or is in an executable state, the process proceeds to the next step SP2 where the lens moving mechanism 30 is in the blood vessel imaging state (FIG. 7A and FIG. 8 (A)) or the subject imaging state (FIG. 7B and FIG. 8B).

  If a negative result is obtained here, this means that both the blood vessel imaging state notification signal and the subject imaging state notification signal have not yet been detected by the state detection unit 43 from the switch unit 34 (FIGS. 7 and 8). In other words, this means that the user does not intend to use the imaging function in the mobile phone 1, and at this time, the control unit 40 continues to execute the non-imaging compatible processing mode.

  If an affirmative result is obtained, this means that either the blood vessel imaging state notification signal or the subject imaging state notification signal is detected by the state detection unit 43 from the switch unit 34 (FIGS. 7 and 8). This means that the user intends to use the imaging function in the cellular phone 1, and at this time, the control unit 40 proceeds to the next step SP3 and displays the blood vessel imaging state (FIG. 7A and FIG. 8). A)) is determined.

  Here, if the control unit 40 determines that the blood vessel imaging state (FIG. 7A and FIG. 8A) is not in this step SP3, the control unit 40 proceeds to the subsequent step SP4 and performs the target process among the function corresponding processes. In addition to the restriction, the imaging control unit 44 is controlled to be in the subject imaging mode to shift to the subject imaging compatible processing mode, and this subject imaging is performed until it is determined in the next step SP5 that the state of the lens moving mechanism 30 has changed. Maintain the corresponding processing mode.

  In this state, the user can image the subject, and when the user intends to use various functions of the cellular phone 1, the state of the lens moving mechanism 30 is changed to the blood vessel imaging state (FIGS. 7A and 8). (A)) or a non-imaging state (FIGS. 7C and 8C).

  If the controller 40 determines in step SP5 that the state of the lens moving mechanism 30 has changed, the control unit 40 proceeds to the subsequent step SP6, where the change is not in the blood vessel imaging state (FIGS. 7A and 8A). If it is determined that there is no, the process returns to step SP1 to make a transition to the non-imaging compatible processing mode.

  On the other hand, if it is determined in step SP3 or step SP6 that the blood vessel is in the blood vessel imaging state (FIG. 7A and FIG. 8A), the control unit 40 proceeds to subsequent step SP7 to input communication related information. Subsequently, the process proceeds to step SP8 to limit the target processing among the function corresponding processing, and after controlling the imaging control unit 44 to be in the blood vessel imaging mode and transitioning to the blood vessel imaging corresponding processing mode, in the next step SP9, It is determined whether or not the user who uses the mobile phone 1 at this time is a regular user using the blood vessel image data D10a supplied from the imaging control unit 44, and if it is determined that the user is not the regular user, step SP1 The process returns to the non-imaging compatible processing mode.

  On the other hand, if the control unit 40 determines that the user is an authorized user, the control unit 40 proceeds to the subsequent step SP10 and controls the transmission / reception unit 42 so as to execute communication processing according to the communication-related information input at step SP6. The communication processing in this blood vessel imaging corresponding processing mode is maintained until it is determined in the next step SP11 that the state of the lens moving mechanism 30 has changed.

  In this state, the user can appropriately input communication related information different from the communication related information input in step SP3 from the operation unit 13 or 14, and when the user intends to use various functions of the mobile phone 1. The state of the lens moving mechanism 30 can be changed to the subject imaging state (FIGS. 7B and 8B) or the non-imaging state (FIGS. 7C and 8C).

  If the control unit 40 determines that the state of the lens moving mechanism 30 has changed in step SP11, the control unit 40 proceeds to the subsequent step SP6, where the change is not in the non-imaging state (FIGS. 7C and 8C). If it is determined that there is no image, the process proceeds to step SP4 to shift to the subject imaging corresponding processing mode, and it is determined that the change is in the non-imaging state (FIG. 7C and FIG. 8C). In such a case, the process returns to step SP1 to shift to the non-imaging compatible processing mode.

  When the control unit 40 receives a call command as an incoming call response from the operation unit 13 or 14 in the subject imaging corresponding processing mode (step SP4) or the blood vessel imaging corresponding processing mode (step SP9), the control unit 40 The process returns to SP1 and transitions to the non-imaging compatible processing mode.

(6) Operation and Effect In the above configuration, the cellular phone 1 is configured such that the position of the optical system (near infrared light transmission lens 25, polarizing plate 27, and RGB transmission lens 33) held on the slide plate 31 is the imaging unit 20. A notification that it is arranged in the middle of the optical path of the optical path is awaited via the switch unit 34 and the state detection unit 44 in sequence.

  When receiving the notification, the mobile phone 1 activates the imaging unit 20 so as to supply the power supply voltage to the imaging control unit 44 and uses the blood vessel imaged by the imaging unit 20 for authentication processing. The mobile phone 1 is allowed to communicate with the outside according to the determination result that the user is an authorized user based on the authentication result.

  Therefore, in this cellular phone 1, a series of processing from blood vessel imaging to communication permission can be executed in conjunction with the moving state of the slide plate 31 without requiring any user operation. Can be communicated simply by moving to a desired position.

  In addition, when receiving the above notification, the mobile phone 1 can appropriately adjust the processing load to reflect the user's intention by appropriately stopping unnecessary target processing among the function corresponding processing of the mobile phone 1. At the same time, the processing load of the entire mobile phone 1 can be minimized.

  According to the above configuration, the imaging unit 20 is activated only when the notification that the position of the optical system held by the slide plate 31 is disposed in the middle of the optical path of the imaging unit 20 and the imaging is performed. By allowing communication with an external communication partner in accordance with the authentication processing result based on the blood vessel imaged by the unit 20, a series of processing from blood vessel imaging to communication permission is not required for the user. Since it can be executed in conjunction with the movement of the slide plate 31, an authorized user who wishes to communicate can communicate only by moving the slide plate 31, thus improving convenience.

(7) Other Embodiments In the above-described embodiment, the blood vessel of the finger FG inside the living body is imaged as the inherent structure of the living body. However, the present invention is not limited to this, A fingerprint on the surface of the living body or a boundary (called a skin pattern) between the epithelial layer and the granular layer inside the living body may be imaged. In particular, if a fingerprint is applied, an image can be taken without irradiating near-infrared light, so that the size can be reduced to the extent that the near-infrared light source 24 can be omitted.

  Further, the finger FG is imaged as the imaging part of the living body's unique structure, but the present invention is not limited to this, and for example, an eyeball part, a palm part, an arm part, or the like may be imaged.

  In the above-described embodiment, the configuration of the imaging unit is the same as that illustrated in FIG. 5. However, the configuration is not limited to this and is not limited to the type of the specific structure to be imaged and other conditions. Various other configurations can be applied accordingly. Further, the CCD 26 is used as the solid-state image pickup device included in the image pickup means. However, the present invention is not limited to this, and various other solid-state image pickup devices such as CMOS (Complementary Metal Oxide Semiconductor) can be used.

  Furthermore, in the above-described embodiment, as the holding means for movably holding the optical system that selectively transmits light obtained from the unique structure in the living body, the near-infrared light transmitting lens 25 and the polarizing plate 27, and RGB Although the case where the slide plate 31 (FIGS. 5 and 6) that holds the transmission lens 33 in a movable manner is applied has been described, the present invention is not limited to this, and as shown in FIG. A slide plate 51 in which 33 is omitted may be applied. Also in this case, the same effect as the above-described embodiment can be obtained.

  Further, in place of the slide plate 31 that is parallel to the back surface 3A of the second housing 3 and moves slidably in the longitudinal direction LC of the second housing 3, FIG. As shown in FIG. 6, a slide plate 61 that is parallel to the back surface 3A of the second housing 3 and that is rotatable about a predetermined position as a rotation axis may be provided. In this case, since the imaging opening (not shown) can be covered in the non-imaging state, damage to the lid 23 (FIG. 4) can be avoided.

  Furthermore, in the above-described embodiment, the notification unit that notifies the position of the optical system held by the holding unit is configured to send a state detection signal to the control unit 40 via the switch unit 34 and the state detection unit 43 in order. Although the case where it is applied is described, the present invention is not limited to this, and a configuration in which a state detection signal is directly sent to the control unit 40 from the switch unit 34 or the rotary switch of the rotating shaft (FIG. 15) is applied. Anyway.

  Further, in the above-described embodiment, the case where the control unit 40 appropriately executes the non-imaging compatible processing mode, the subject imaging compatible processing mode, and the blood vessel imaging compatible processing mode has been described, but the present invention is not limited thereto. The control unit 40 may execute only the non-imaging compatible processing mode and the blood vessel imaging compatible processing mode. In this case, if the lens moving mechanism 30 having the slide plate 51 having the configuration shown in FIG. 14 is applied, the imaging unit 20 can be used exclusively for the authentication process. For example, the management server manages predetermined information. In contrast, the present invention is effective when applied to a blood vessel image read-only device that transmits a blood vessel image via a network.

  Furthermore, in the above-described embodiment, communication related information is input in conjunction with the blood vessel imaging state (FIGS. 7A and 8A) of the lens moving mechanism 30, and after this input, the imaging is automatically performed. Although the case where the control unit 44 is controlled to be in the blood vessel imaging mode and the authentication process is executed has been described, the present invention is not limited to this, and the input time of the communication related information may be changed. good. Even in this case, the same effects as those of the above-described embodiment can be obtained.

  Further, in the above-described embodiment, the case where the mobile phone 1 is applied as a device having a blood vessel imaging function has been described. However, the present invention is not limited to this, and for example, a PDA, a notebook personal computer, a home An information terminal device having various other imaging means and communication means, such as an electronic device for use or a blood vessel image reading dedicated device described above, can be applied.

  The present invention is an information terminal device having an imaging unit and a communication unit, and can be used when information is transmitted from the information terminal device.

  DESCRIPTION OF SYMBOLS 1 ... Cellular phone, 2 ... 1st housing, 3 ... 2nd housing, 4 ... Rotating shaft part, 13 ... Rotation press operation part, 14 ... Operation part, 20 ... Imaging part, 21 ... CCD camera, 24A, 24B ... near infrared light source, 25 ... near infrared light transmitting lens, 26 ... CCD, 27 ... polarizing plate, 30 ... lens moving mechanism, 31, 51, 61 ... slide Plate 32... Gripping part 33... RGB transmission lens 34. Switch part 34 A. Near infrared imaging switch 34 B visible light imaging switch 40 control unit 41 storage unit , 42... Transmission / reception unit, 43... State detection unit, 44... Imaging control unit, 44 a... Light source control unit, 44 b ... charge control unit, 44 c .. A / D conversion unit, COM. D1: State detection data, D10a: Blood vessel image data, D10b: Subject image Data, S2 ...... charge read signal, S3 ...... charge reset signal, S10a ...... blood vessel image signal, S10b ...... subject image signals, RT ...... mode switching procedure.

Claims (3)

A holding means for movably holding a polarizing plate that diverts light reflected from the surface of the living body out of light including a wavelength that has an absorption characteristic in the subject inside the living body, from the optical path of the imaging element;
A first mode for capturing an image of a subject existing in a living body in response to the movement of the polarizing plate on the optical path of the image sensor; and the above mode in response to the polarizing plate being removed from the optical path of the image sensor. Switching means for switching between a second mode for imaging a subject other than the subject in the living body and a third mode for setting the non-imaging state while the polarizing plate is moved ;
An irradiation means for irradiating the light when switched to the first mode;
An information terminal device comprising: collating means for collating information to be compared with a subject inside the living body imaged by the imaging element when the mode is switched to the first mode. The information terminal device according to claim 1, wherein the polarizing plate has a polarization axis in a direction orthogonal to an irradiation direction in which the light is irradiated. The information terminal device according to claim 2, wherein the irradiating unit, the polarizing plate, and the imaging element are arranged on the same direction side with respect to a surface to be imaged of a subject inside the living body.

Images